From patchwork Wed Jun 25 16:49:09 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andreas Arnez X-Patchwork-Id: 1727 Received: (qmail 28656 invoked by alias); 25 Jun 2014 16:49:26 -0000 Mailing-List: contact gdb-patches-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: gdb-patches-owner@sourceware.org Delivered-To: mailing list gdb-patches@sourceware.org Received: (qmail 28430 invoked by uid 89); 25 Jun 2014 16:49:23 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-0.9 required=5.0 tests=AWL, BAYES_00, T_RP_MATCHES_RCVD, UNWANTED_LANGUAGE_BODY autolearn=ham version=3.3.2 X-HELO: e06smtp10.uk.ibm.com Received: from e06smtp10.uk.ibm.com (HELO e06smtp10.uk.ibm.com) (195.75.94.106) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with (AES256-SHA encrypted) ESMTPS; Wed, 25 Jun 2014 16:49:22 +0000 Received: from /spool/local by e06smtp10.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Date: Wed, 25 Jun 2014 18:49:09 +0200 Message-Id: <1403714949-28133-14-git-send-email-arnez@linux.vnet.ibm.com> In-Reply-To: <1403714949-28133-1-git-send-email-arnez@linux.vnet.ibm.com> References: <1403714949-28133-1-git-send-email-arnez@linux.vnet.ibm.com> X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 14062516-4966-0000-0000-000000806F48 X-IsSubscribed: yes gdb/ * ia64-linux-tdep.c: Include "regset.h". (ia64_linux_gregmap, ia64_linux_fpregmap): New register maps. (IA64_LINUX_GREGS_SIZE, IA64_LINUX_FPREGS_SIZE): New macros. (ia64_linux_supply_fpregset): New function. (ia64_linux_gregset, ia64_linux_fpregset): New regsets. (ia64_linux_regset_from_core_section): New function. (ia64_linux_init_abi): Set regset_from_core_section gdbarch method. --- gdb/ia64-linux-tdep.c | 87 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 87 insertions(+) diff --git a/gdb/ia64-linux-tdep.c b/gdb/ia64-linux-tdep.c index 128924e..9989602 100644 --- a/gdb/ia64-linux-tdep.c +++ b/gdb/ia64-linux-tdep.c @@ -26,6 +26,7 @@ #include "solib-svr4.h" #include "symtab.h" #include "linux-tdep.h" +#include "regset.h" #include @@ -131,6 +132,88 @@ ia64_linux_stap_is_single_operand (struct gdbarch *gdbarch, const char *s) || isdigit (*s)); /* Literal number. */ } +/* Core file support. */ + +static const struct regcache_map_entry ia64_linux_gregmap[] = + { + { 32, IA64_GR0_REGNUM }, /* r0 ... r31 */ + { 8, REGCACHE_MAP_SKIP_BYTES }, /* FIXME: NAT collection bits? */ + { 1, IA64_PR_REGNUM }, + { 8, IA64_BR0_REGNUM }, /* b0 ... b7 */ + { 1, IA64_IP_REGNUM }, + { 1, IA64_CFM_REGNUM }, + { 1, IA64_PSR_REGNUM }, + { 1, IA64_RSC_REGNUM }, + { 1, IA64_BSP_REGNUM }, + { 1, IA64_BSPSTORE_REGNUM }, + { 1, IA64_RNAT_REGNUM }, + { 1, IA64_CCV_REGNUM }, + { 1, IA64_UNAT_REGNUM }, + { 1, IA64_FPSR_REGNUM }, + { 1, IA64_PFS_REGNUM }, + { 1, IA64_LC_REGNUM }, + { 1, IA64_EC_REGNUM }, + { 0 } + }; + +#define IA64_LINUX_GREGS_SIZE (55 * 8) + +static const struct regcache_map_entry ia64_linux_fpregmap[] = + { + { 128, IA64_FR0_REGNUM }, /* f0 ... f127 */ + { 0 } + }; + +#define IA64_LINUX_FPREGS_SIZE (128 * 8) + +static void +ia64_linux_supply_fpregset (const struct regset *regset, + struct regcache *regcache, + int regnum, const void *regs, size_t len) +{ + const gdb_byte f_zero[16] = { 0 }; + const gdb_byte f_one[16] = + { 0, 0, 0, 0, 0, 0, 0, 0x80, 0xff, 0xff, 0, 0, 0, 0, 0, 0 }; + + regcache_supply_regset (regset, regcache, regnum, regs, len); + + /* Kernel generated cores have fr1==0 instead of 1.0. Older GDBs + did the same. So ignore whatever might be recorded in fpregset_t + for fr0/fr1 and always supply their expected values. */ + if (regnum == -1 || regnum == IA64_FR0_REGNUM) + regcache_raw_supply (regcache, IA64_FR0_REGNUM, f_zero); + if (regnum == -1 || regnum == IA64_FR1_REGNUM) + regcache_raw_supply (regcache, IA64_FR1_REGNUM, f_one); +} + +static const struct regset ia64_linux_gregset = + { + ia64_linux_gregmap, + regcache_supply_regset, regcache_collect_regset + }; + +static const struct regset ia64_linux_fpregset = + { + ia64_linux_fpregmap, + ia64_linux_supply_fpregset, regcache_collect_regset + }; + +static const struct regset * +ia64_linux_regset_from_core_section (struct gdbarch *gdbarch, + const char *sect_name, + size_t sect_size) +{ + if (strcmp (sect_name, ".reg") == 0 + && sect_size >= IA64_LINUX_GREGS_SIZE) + return &ia64_linux_gregset; + + if (strcmp (sect_name, ".reg2") == 0 + && sect_size >= IA64_LINUX_FPREGS_SIZE) + return &ia64_linux_fpregset; + + return NULL; +} + static void ia64_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) { @@ -161,6 +244,10 @@ ia64_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) set_gdbarch_fetch_tls_load_module_address (gdbarch, svr4_fetch_objfile_link_map); + /* Core file support. */ + set_gdbarch_regset_from_core_section (gdbarch, + ia64_linux_regset_from_core_section); + /* SystemTap related. */ set_gdbarch_stap_register_prefixes (gdbarch, stap_register_prefixes); set_gdbarch_stap_register_indirection_prefixes (gdbarch,